Study on the law of surface subsidence in layered mining of thick coal seam with medium hard roof

doi:10.1038/s41598-023-42012-5

NTSC-IR

	Study on the law of surface subsidence in layered mining of thick coal seam with medium hard roof
	Liu, Xiugang 1,2,3; Wei, Fei 4,5; Tan, Zhixiang 6; Jiang, Zaibing 1,2,3; Wang, Yi 3; Zhang, Jie 3
	2023-09-07
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	13 期号:1 页码:12
摘要	In this study, the change law of the surface subsidence coefficient under the condition of thick coal seam layered mining was investigated. The study is based on the measured subsidence data of the 1210-working face of the Mengba mine surface mobile observation station after the first- and second-layer mining. UDEC numerical simulation software was used to simulate the variation of surface subsidence coefficient after the first, second, third, fourth, fifth-, and sixth-layer mining when the thickness of slicing mining is 5 m. The maximum relative error between the simulated result and the measured result of the subsidence coefficient q is 2.7%, which further verifies the correctness of the established model. Moreover, the simulation results show that with the increase of the cumulative mining thickness, the subsidence coefficient q of the surface presents a segmented characteristic. When the cumulative mining thickness does not reach 25 m, the subsidence coefficient of the surface gradually increases with the increase of the mining thickness. On the other hand, when the cumulative mining thickness reaches 25 m, the subsidence coefficient of the surface will tend to a constant value and no longer change with the increase of the mining thickness. Finally, the calculation formula between the surface subsidence coefficient and the cumulative mining thickness of layered mining under the condition of medium hard roof is fitted, which provides a parameter basis for coal seam mining with similar geological conditions.
资助者	Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project
DOI	10.1038/s41598-023-42012-5
关键词[WOS]	PREDICTION
语种	英语
资助项目	Found of the National Key Research and Development Program and Key Special Fund Project[2018YFC0808202]
资助者	Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project ; Found of the National Key Research and Development Program and Key Special Fund Project
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001065283800004
出版者	NATURE PORTFOLIO
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14236
专题	中国科学院国家授时中心
通讯作者	Liu, Xiugang
作者单位	1.China Univ Min & Technol Beijing, Beijing 100083, Peoples R China 2.China Coal Res Inst, Beijing 100013, Peoples R China 3.CCTEG Xian Res Inst Grp Co Ltd, Xian 710077, Peoples R China 4.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.China Univ Min & Technol, Jiangsu Key Lab Resource & Environm Informat Engn, Xuzhou 221116, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiugang,Wei, Fei,Tan, Zhixiang,et al. Study on the law of surface subsidence in layered mining of thick coal seam with medium hard roof[J]. SCIENTIFIC REPORTS,2023,13(1):12.
APA	Liu, Xiugang,Wei, Fei,Tan, Zhixiang,Jiang, Zaibing,Wang, Yi,&Zhang, Jie.(2023).Study on the law of surface subsidence in layered mining of thick coal seam with medium hard roof.SCIENTIFIC REPORTS,13(1),12.
MLA	Liu, Xiugang,et al."Study on the law of surface subsidence in layered mining of thick coal seam with medium hard roof".SCIENTIFIC REPORTS 13.1(2023):12.